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  • Title: [Is alfa-interferon still current in the management of Kasabach-Merritt syndrome?].
    Author: Duclaux-Loras R, Lachaux A, Guibaud L, Bertrand Y.
    Journal: Arch Pediatr; 2015 May; 22(5):523-7. PubMed ID: 25858451.
    Abstract:
    Kasabach-Merritt syndrome (KMS), characterized by thrombocytopenia, may complicate vascular tumors such as kaposiform hemangioendothelioma and tufted angioma. We report on two infants, respectively 2 months and 15 days old at the onset of symptoms, the first of whom presented with a left cervico-occipito-scapular hemangioma with parotid extension, and the second with a vascular tumor located on the left shoulder with fast extension on the left inferior hemithorax and the left arm. Thrombocytopenia (< 20 G/L) was associated in both cases. Treatment comprised first high-dose corticosteroids (2mg/kg) in association with vincristine (1mg/m(2)/week). Interferon was introduced as third-line treatment at 3 MIU/m(2)/day. In the first patient, interferon was effective both on thrombocytopenia and tumor in 2 months. In the second patient, the first interferon treatment was not effective despite 6 months of therapy. However, a second treatment 8 years later was successful. After 10 and 3 years follow-up, respectively, there were no side effects and most particularly no neurologic complications. These two observations open the discussion of the role of interferon (3 MIU/m(2)/day) as well as new therapies in the control of angiogenesis in case of failure of first-line treatment of complicated KMS vascular tumors.
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